Home / 13,743.72-20,618.01-4,385.79

Finding the Fourth Proportional to 13,743.72, 20,618.01 and 4,385.79

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Solution

The fourth proportional to 13,743.72, 20,618.01 and 4,385.79 is: 6,579.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,743.72 : 20,618.01 = 4,385.79 : x
  2. Step 2: Convert to fraction form
    13,743.72/20,618.01 = 4,385.79/x
  3. Step 3: Cross multiply
    13,743.72x = 20,618.01 × 4,385.79
  4. Step 4: Simplify right side
    13,743.72x = 90,426,262.08
  5. Step 5: Solve for x
    x = 90,426,262.08/13,743.72
  6. Step 6: Final answer
    x = 6,579.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.